[ENLUMINATION]. [CHOIR BOOK]. Initial F watermarked. Music with square notation on 4-line staves drawn in red ink. Ink and tempera on parchment. France, Paris (?) or Northern France (?), 13th century. Dimensions : 158 x 155 mm Good condition; traces of glue on the back. Very large initial "F" watermarked, taken from a choir book (antiphonary or gradual?), introducing the chant "Fuit homo missus a deo cui nome erat iohannes...".